using System;
using ChartDirector;

namespace CSharpChartExplorer
{
    public class stackrose : DemoModule
    {
        //Name of demo module
        public string getName() { return "Stacked Rose Chart"; }

        //Number of charts produced in this demo module
        public int getNoOfCharts() { return 1; }

        //Main code for creating chart.
        //Note: the argument img is unused because this demo only has 1 chart.
        public void createChart(WinChartViewer viewer, string img)
        {
            // Data for the chart
            double[] data0 = {5, 3, 10, 4, 3, 5, 2, 5};
            double[] data1 = {12, 6, 17, 6, 7, 9, 4, 7};
            double[] data2 = {17, 7, 22, 7, 18, 13, 5, 11};

            double[] angles = {0, 45, 90, 135, 180, 225, 270, 315};
            string[] labels = {"North", "North\nEast", "East", "South\nEast",
                "South", "South\nWest", "West", "North\nWest"};

            // Create a PolarChart object of size 460 x 500 pixels, with a grey
            // (e0e0e0) background and a 1 pixel 3D border
            PolarChart c = new PolarChart(460, 500, 0xe0e0e0, 0x000000, 1);

            // Add a title to the chart at the top left corner using 15pts Arial Bold
            // Italic font. Use white text on deep blue background.
            c.addTitle("Wind Direction", "Arial Bold Italic", 15, 0xffffff
                ).setBackground(0x000080);

            LegendBox legendBox = c.addLegend(230, 35, false, "Arial Bold", 9);
            legendBox.setAlignment(Chart.TopCenter);
            legendBox.setBackground(Chart.Transparent, Chart.Transparent, 1);

            legendBox.addKey("5 m/s or above", 0xff3333);
            legendBox.addKey("1 - 5 m/s", 0x33ff33);
            legendBox.addKey("less than 1 m/s", 0x3333ff);

            // Set plot area center at (230, 280) with radius 180 pixels and white
            // background
            c.setPlotArea(230, 280, 180, 0xffffff);

            // Set the grid style to circular grid
            c.setGridStyle(false);

            // Set angular axis as 0 - 360, with a spoke every 30 units
            c.angularAxis().setLinearScale2(0, 360, labels);

            for(int i = 0; i < angles.Length; ++i) {
                c.angularAxis().addZone(angles[i] - 10, angles[i] + 10, 0, data0[i],
                    0x3333ff, 0);
                c.angularAxis().addZone(angles[i] - 10, angles[i] + 10, data0[i],
                    data1[i], 0x33ff33, 0);
                c.angularAxis().addZone(angles[i] - 10, angles[i] + 10, data1[i],
                    data2[i], 0xff3333, 0);
            }

            // Add an Transparent invisible layer to ensure the axis is auto-scaled
            // using the data
            c.addLineLayer(data2, Chart.Transparent);

            // Output the chart
            viewer.Image = c.makeImage();
        }
    }
}

